Biology, 17.12.2020 05:00 dawsoncarlisle
Retinitis pigmentosa is a rare disease of the eye in which the cells of the retina produce defective proteins and it only occurs in males. which of the following statements is correct about retina pigmentosa?
a - The gene for it appears on autosomal chromosome
b - The gene for it appears on X chromosome
c - The gene for it appears on Y chromosome
d - it is not a genetic disease
Answers: 2
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Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.
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Biology, 22.06.2019 11:00
Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.
Answers: 1
Biology, 22.06.2019 13:00
Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?
Answers: 1
Retinitis pigmentosa is a rare disease of the eye in which the cells of the retina produce defective...
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